Finding the Third Proportional to 9,250.50 and 19,978.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,250.50 : 19,978.13 = 19,978.13 : x
2. Step 2: Convert to fraction form
   9,250.50/19,978.13 = 19,978.13/x
3. Step 3: Cross multiply
   9,250.50x = 19,978.13 × 19,978.13
4. Step 4: Simplify right side
   9,250.50x = 399,125,478.52
5. Step 5: Solve for x
   x = 399,125,478.52/9,250.50
6. Step 6: Final answer
   x = 43,146.37