Finding the Third Proportional to 31,646,384 and 64,970,440

Step by Step Solution

1. Step 1: Write the proportion equation
   31,646,384 : 64,970,440 = 64,970,440 : x
2. Step 2: Convert to fraction form
   31,646,384/64,970,440 = 64,970,440/x
3. Step 3: Cross multiply
   31,646,384x = 64,970,440 × 64,970,440
4. Step 4: Simplify right side
   31,646,384x = 4,221,158,073,793,600
5. Step 5: Solve for x
   x = 4,221,158,073,793,600/31,646,384
6. Step 6: Final answer
   x = 133,385,162.54