Finding the Third Proportional to 21,490.31 and 28,932.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,490.31 : 28,932.19 = 28,932.19 : x
2. Step 2: Convert to fraction form
   21,490.31/28,932.19 = 28,932.19/x
3. Step 3: Cross multiply
   21,490.31x = 28,932.19 × 28,932.19
4. Step 4: Simplify right side
   21,490.31x = 837,071,473.54
5. Step 5: Solve for x
   x = 837,071,473.54/21,490.31
6. Step 6: Final answer
   x = 38,951.11