Finding the Third Proportional to 647,798 and 1,423,131

Step by Step Solution

1. Step 1: Write the proportion equation
   647,798 : 1,423,131 = 1,423,131 : x
2. Step 2: Convert to fraction form
   647,798/1,423,131 = 1,423,131/x
3. Step 3: Cross multiply
   647,798x = 1,423,131 × 1,423,131
4. Step 4: Simplify right side
   647,798x = 2,025,301,843,161
5. Step 5: Solve for x
   x = 2,025,301,843,161/647,798
6. Step 6: Final answer
   x = 3,126,440.41