Finding the Third Proportional to 53,242,682 and 81,787,300

Step by Step Solution

1. Step 1: Write the proportion equation
   53,242,682 : 81,787,300 = 81,787,300 : x
2. Step 2: Convert to fraction form
   53,242,682/81,787,300 = 81,787,300/x
3. Step 3: Cross multiply
   53,242,682x = 81,787,300 × 81,787,300
4. Step 4: Simplify right side
   53,242,682x = 6,689,162,441,290,000
5. Step 5: Solve for x
   x = 6,689,162,441,290,000/53,242,682
6. Step 6: Final answer
   x = 125,635,339.73