Finding the Third Proportional to 749,218.50 and 1,638,315

Step by Step Solution

1. Step 1: Write the proportion equation
   749,218.50 : 1,638,315 = 1,638,315 : x
2. Step 2: Convert to fraction form
   749,218.50/1,638,315 = 1,638,315/x
3. Step 3: Cross multiply
   749,218.50x = 1,638,315 × 1,638,315
4. Step 4: Simplify right side
   749,218.50x = 2,684,076,039,225
5. Step 5: Solve for x
   x = 2,684,076,039,225/749,218.50
6. Step 6: Final answer
   x = 3,582,501.02