Finding the Third Proportional to 99,807.75 and 143,468.25

Step by Step Solution

1. Step 1: Write the proportion equation
   99,807.75 : 143,468.25 = 143,468.25 : x
2. Step 2: Convert to fraction form
   99,807.75/143,468.25 = 143,468.25/x
3. Step 3: Cross multiply
   99,807.75x = 143,468.25 × 143,468.25
4. Step 4: Simplify right side
   99,807.75x = 20,583,138,758.06
5. Step 5: Solve for x
   x = 20,583,138,758.06/99,807.75
6. Step 6: Final answer
   x = 206,227.86