Finding the Third Proportional to 143,149.50 and 298,068.75

Step by Step Solution

1. Step 1: Write the proportion equation
   143,149.50 : 298,068.75 = 298,068.75 : x
2. Step 2: Convert to fraction form
   143,149.50/298,068.75 = 298,068.75/x
3. Step 3: Cross multiply
   143,149.50x = 298,068.75 × 298,068.75
4. Step 4: Simplify right side
   143,149.50x = 88,844,979,726.56
5. Step 5: Solve for x
   x = 88,844,979,726.56/143,149.50
6. Step 6: Final answer
   x = 620,644.71