Finding the Third Proportional to 138,061.13 and 284,931

Step by Step Solution

1. Step 1: Write the proportion equation
   138,061.13 : 284,931 = 284,931 : x
2. Step 2: Convert to fraction form
   138,061.13/284,931 = 284,931/x
3. Step 3: Cross multiply
   138,061.13x = 284,931 × 284,931
4. Step 4: Simplify right side
   138,061.13x = 81,185,674,761
5. Step 5: Solve for x
   x = 81,185,674,761/138,061.13
6. Step 6: Final answer
   x = 588,041.53