Finding the Third Proportional to 143,302.50 and 307,746

Step by Step Solution

1. Step 1: Write the proportion equation
   143,302.50 : 307,746 = 307,746 : x
2. Step 2: Convert to fraction form
   143,302.50/307,746 = 307,746/x
3. Step 3: Cross multiply
   143,302.50x = 307,746 × 307,746
4. Step 4: Simplify right side
   143,302.50x = 94,707,600,516
5. Step 5: Solve for x
   x = 94,707,600,516/143,302.50
6. Step 6: Final answer
   x = 660,892.87