Finding the Third Proportional to 748,640 and 1,623,402

Step by Step Solution

1. Step 1: Write the proportion equation
   748,640 : 1,623,402 = 1,623,402 : x
2. Step 2: Convert to fraction form
   748,640/1,623,402 = 1,623,402/x
3. Step 3: Cross multiply
   748,640x = 1,623,402 × 1,623,402
4. Step 4: Simplify right side
   748,640x = 2,635,434,053,604
5. Step 5: Solve for x
   x = 2,635,434,053,604/748,640
6. Step 6: Final answer
   x = 3,520,295.54