Finding the Third Proportional to 617,314.50 and 819,315

Step by Step Solution

1. Step 1: Write the proportion equation
   617,314.50 : 819,315 = 819,315 : x
2. Step 2: Convert to fraction form
   617,314.50/819,315 = 819,315/x
3. Step 3: Cross multiply
   617,314.50x = 819,315 × 819,315
4. Step 4: Simplify right side
   617,314.50x = 671,277,069,225
5. Step 5: Solve for x
   x = 671,277,069,225/617,314.50
6. Step 6: Final answer
   x = 1,087,415.04