Finding the Third Proportional to 748,645 and 1,623,410

Step by Step Solution

1. Step 1: Write the proportion equation
   748,645 : 1,623,410 = 1,623,410 : x
2. Step 2: Convert to fraction form
   748,645/1,623,410 = 1,623,410/x
3. Step 3: Cross multiply
   748,645x = 1,623,410 × 1,623,410
4. Step 4: Simplify right side
   748,645x = 2,635,460,028,100
5. Step 5: Solve for x
   x = 2,635,460,028,100/748,645
6. Step 6: Final answer
   x = 3,520,306.72