Finding the Third Proportional to 647,760 and 1,423,056

Step by Step Solution

1. Step 1: Write the proportion equation
   647,760 : 1,423,056 = 1,423,056 : x
2. Step 2: Convert to fraction form
   647,760/1,423,056 = 1,423,056/x
3. Step 3: Cross multiply
   647,760x = 1,423,056 × 1,423,056
4. Step 4: Simplify right side
   647,760x = 2,025,088,379,136
5. Step 5: Solve for x
   x = 2,025,088,379,136/647,760
6. Step 6: Final answer
   x = 3,126,294.27