Finding the Third Proportional to 52,139.81 and 121,521.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52,139.81 : 121,521.38 = 121,521.38 : x
2. Step 2: Convert to fraction form
   52,139.81/121,521.38 = 121,521.38/x
3. Step 3: Cross multiply
   52,139.81x = 121,521.38 × 121,521.38
4. Step 4: Simplify right side
   52,139.81x = 14,767,444,581.89
5. Step 5: Solve for x
   x = 14,767,444,581.89/52,139.81
6. Step 6: Final answer
   x = 283,227.80