Finding the Third Proportional to 555,309,715,980 and 781,998,446,682

Step by Step Solution

1. Step 1: Write the proportion equation
   555,309,715,980 : 781,998,446,682 = 781,998,446,682 : x
2. Step 2: Convert to fraction form
   555,309,715,980/781,998,446,682 = 781,998,446,682/x
3. Step 3: Cross multiply
   555,309,715,980x = 781,998,446,682 × 781,998,446,682
4. Step 4: Simplify right side
   555,309,715,980x = 611,521,570,613,060,740,055,040
5. Step 5: Solve for x
   x = 611,521,570,613,060,740,055,040/555,309,715,980
6. Step 6: Final answer
   x = 1,101,226,132,040.31