Finding the Third Proportional to 320,881.50 and 617,098.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,881.50 : 617,098.50 = 617,098.50 : x
2. Step 2: Convert to fraction form
   320,881.50/617,098.50 = 617,098.50/x
3. Step 3: Cross multiply
   320,881.50x = 617,098.50 × 617,098.50
4. Step 4: Simplify right side
   320,881.50x = 380,810,558,702.25
5. Step 5: Solve for x
   x = 380,810,558,702.25/320,881.50
6. Step 6: Final answer
   x = 1,186,763.83