Finding the Third Proportional to 72,678,362 and 111,711,677

Step by Step Solution

1. Step 1: Write the proportion equation
   72,678,362 : 111,711,677 = 111,711,677 : x
2. Step 2: Convert to fraction form
   72,678,362/111,711,677 = 111,711,677/x
3. Step 3: Cross multiply
   72,678,362x = 111,711,677 × 111,711,677
4. Step 4: Simplify right side
   72,678,362x = 12,479,498,778,152,328
5. Step 5: Solve for x
   x = 12,479,498,778,152,328/72,678,362
6. Step 6: Final answer
   x = 171,708,586.09