Finding the Third Proportional to 72,677,891 and 111,711,124

Step by Step Solution

1. Step 1: Write the proportion equation
   72,677,891 : 111,711,124 = 111,711,124 : x
2. Step 2: Convert to fraction form
   72,677,891/111,711,124 = 111,711,124/x
3. Step 3: Cross multiply
   72,677,891x = 111,711,124 × 111,711,124
4. Step 4: Simplify right side
   72,677,891x = 12,479,375,225,343,376
5. Step 5: Solve for x
   x = 12,479,375,225,343,376/72,677,891
6. Step 6: Final answer
   x = 171,707,998.87