Finding the Third Proportional to 28,199,723,142 and 42,187,778,029

Step by Step Solution

1. Step 1: Write the proportion equation
   28,199,723,142 : 42,187,778,029 = 42,187,778,029 : x
2. Step 2: Convert to fraction form
   28,199,723,142/42,187,778,029 = 42,187,778,029/x
3. Step 3: Cross multiply
   28,199,723,142x = 42,187,778,029 × 42,187,778,029
4. Step 4: Simplify right side
   28,199,723,142x = 1,779,808,615,024,175,087,616
5. Step 5: Solve for x
   x = 1,779,808,615,024,175,087,616/28,199,723,142
6. Step 6: Final answer
   x = 63,114,400,310.31