Finding the Third Proportional to 183,477.50 and 280,688

Step by Step Solution

1. Step 1: Write the proportion equation
   183,477.50 : 280,688 = 280,688 : x
2. Step 2: Convert to fraction form
   183,477.50/280,688 = 280,688/x
3. Step 3: Cross multiply
   183,477.50x = 280,688 × 280,688
4. Step 4: Simplify right side
   183,477.50x = 78,785,753,344
5. Step 5: Solve for x
   x = 78,785,753,344/183,477.50
6. Step 6: Final answer
   x = 429,402.81