Finding the Third Proportional to 69,280.31 and 149,637.38

Step by Step Solution

1. Step 1: Write the proportion equation
   69,280.31 : 149,637.38 = 149,637.38 : x
2. Step 2: Convert to fraction form
   69,280.31/149,637.38 = 149,637.38/x
3. Step 3: Cross multiply
   69,280.31x = 149,637.38 × 149,637.38
4. Step 4: Simplify right side
   69,280.31x = 22,391,343,996.89
5. Step 5: Solve for x
   x = 22,391,343,996.89/69,280.31
6. Step 6: Final answer
   x = 323,199.23