Finding the Third Proportional to 69,732 and 143,139.75

Step by Step Solution

1. Step 1: Write the proportion equation
   69,732 : 143,139.75 = 143,139.75 : x
2. Step 2: Convert to fraction form
   69,732/143,139.75 = 143,139.75/x
3. Step 3: Cross multiply
   69,732x = 143,139.75 × 143,139.75
4. Step 4: Simplify right side
   69,732x = 20,488,988,030.06
5. Step 5: Solve for x
   x = 20,488,988,030.06/69,732
6. Step 6: Final answer
   x = 293,824.76