Finding the Third Proportional to 14,407.50 and 21,279.75

Step by Step Solution

1. Step 1: Write the proportion equation
   14,407.50 : 21,279.75 = 21,279.75 : x
2. Step 2: Convert to fraction form
   14,407.50/21,279.75 = 21,279.75/x
3. Step 3: Cross multiply
   14,407.50x = 21,279.75 × 21,279.75
4. Step 4: Simplify right side
   14,407.50x = 452,827,760.06
5. Step 5: Solve for x
   x = 452,827,760.06/14,407.50
6. Step 6: Final answer
   x = 31,430.00