Finding the Third Proportional to 356,627 and 485,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,627 : 485,731.50 = 485,731.50 : x
2. Step 2: Convert to fraction form
   356,627/485,731.50 = 485,731.50/x
3. Step 3: Cross multiply
   356,627x = 485,731.50 × 485,731.50
4. Step 4: Simplify right side
   356,627x = 235,935,090,092.25
5. Step 5: Solve for x
   x = 235,935,090,092.25/356,627
6. Step 6: Final answer
   x = 661,573.83