Finding the Third Proportional to 72,677,904 and 111,711,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,677,904 : 111,711,136.50 = 111,711,136.50 : x
2. Step 2: Convert to fraction form
   72,677,904/111,711,136.50 = 111,711,136.50/x
3. Step 3: Cross multiply
   72,677,904x = 111,711,136.50 × 111,711,136.50
4. Step 4: Simplify right side
   72,677,904x = 12,479,378,018,121,632
5. Step 5: Solve for x
   x = 12,479,378,018,121,632/72,677,904
6. Step 6: Final answer
   x = 171,708,006.58