Finding the Third Proportional to 53,866,732 and 83,578,955

Step by Step Solution

1. Step 1: Write the proportion equation
   53,866,732 : 83,578,955 = 83,578,955 : x
2. Step 2: Convert to fraction form
   53,866,732/83,578,955 = 83,578,955/x
3. Step 3: Cross multiply
   53,866,732x = 83,578,955 × 83,578,955
4. Step 4: Simplify right side
   53,866,732x = 6,985,441,718,892,025
5. Step 5: Solve for x
   x = 6,985,441,718,892,025/53,866,732
6. Step 6: Final answer
   x = 129,680,072.64