Finding the Third Proportional to 647,424 and 1,423,332

Step by Step Solution

1. Step 1: Write the proportion equation
   647,424 : 1,423,332 = 1,423,332 : x
2. Step 2: Convert to fraction form
   647,424/1,423,332 = 1,423,332/x
3. Step 3: Cross multiply
   647,424x = 1,423,332 × 1,423,332
4. Step 4: Simplify right side
   647,424x = 2,025,873,982,224
5. Step 5: Solve for x
   x = 2,025,873,982,224/647,424
6. Step 6: Final answer
   x = 3,129,130.19