Finding the Third Proportional to 31,646,380 and 64,970,432

Step by Step Solution

1. Step 1: Write the proportion equation
   31,646,380 : 64,970,432 = 64,970,432 : x
2. Step 2: Convert to fraction form
   31,646,380/64,970,432 = 64,970,432/x
3. Step 3: Cross multiply
   31,646,380x = 64,970,432 × 64,970,432
4. Step 4: Simplify right side
   31,646,380x = 4,221,157,034,266,624
5. Step 5: Solve for x
   x = 4,221,157,034,266,624/31,646,380
6. Step 6: Final answer
   x = 133,385,146.56