Finding the Third Proportional to 647,964 and 1,439,745

Step by Step Solution

1. Step 1: Write the proportion equation
   647,964 : 1,439,745 = 1,439,745 : x
2. Step 2: Convert to fraction form
   647,964/1,439,745 = 1,439,745/x
3. Step 3: Cross multiply
   647,964x = 1,439,745 × 1,439,745
4. Step 4: Simplify right side
   647,964x = 2,072,865,665,025
5. Step 5: Solve for x
   x = 2,072,865,665,025/647,964
6. Step 6: Final answer
   x = 3,199,044.49