Finding the Third Proportional to 109,399.78 and 147,478.22

Step by Step Solution

1. Step 1: Write the proportion equation
   109,399.78 : 147,478.22 = 147,478.22 : x
2. Step 2: Convert to fraction form
   109,399.78/147,478.22 = 147,478.22/x
3. Step 3: Cross multiply
   109,399.78x = 147,478.22 × 147,478.22
4. Step 4: Simplify right side
   109,399.78x = 21,749,825,005.67
5. Step 5: Solve for x
   x = 21,749,825,005.67/109,399.78
6. Step 6: Final answer
   x = 198,810.50