Finding the Third Proportional to 11,139.19 and 14,848.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,139.19 : 14,848.31 = 14,848.31 : x
2. Step 2: Convert to fraction form
   11,139.19/14,848.31 = 14,848.31/x
3. Step 3: Cross multiply
   11,139.19x = 14,848.31 × 14,848.31
4. Step 4: Simplify right side
   11,139.19x = 220,472,384.10
5. Step 5: Solve for x
   x = 220,472,384.10/11,139.19
6. Step 6: Final answer
   x = 19,792.50