Finding the Third Proportional to 47,916,394 and 78,234,870

Step by Step Solution

1. Step 1: Write the proportion equation
   47,916,394 : 78,234,870 = 78,234,870 : x
2. Step 2: Convert to fraction form
   47,916,394/78,234,870 = 78,234,870/x
3. Step 3: Cross multiply
   47,916,394x = 78,234,870 × 78,234,870
4. Step 4: Simplify right side
   47,916,394x = 6,120,694,883,916,900
5. Step 5: Solve for x
   x = 6,120,694,883,916,900/47,916,394
6. Step 6: Final answer
   x = 127,736,967.93