Finding the Third Proportional to 72,677,478 and 111,710,539.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,677,478 : 111,710,539.50 = 111,710,539.50 : x
2. Step 2: Convert to fraction form
   72,677,478/111,710,539.50 = 111,710,539.50/x
3. Step 3: Cross multiply
   72,677,478x = 111,710,539.50 × 111,710,539.50
4. Step 4: Simplify right side
   72,677,478x = 12,479,244,635,381,060
5. Step 5: Solve for x
   x = 12,479,244,635,381,060/72,677,478
6. Step 6: Final answer
   x = 171,707,177.78