Finding the Third Proportional to 141,513 and 209,029.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,513 : 209,029.50 = 209,029.50 : x
2. Step 2: Convert to fraction form
   141,513/209,029.50 = 209,029.50/x
3. Step 3: Cross multiply
   141,513x = 209,029.50 × 209,029.50
4. Step 4: Simplify right side
   141,513x = 43,693,331,870.25
5. Step 5: Solve for x
   x = 43,693,331,870.25/141,513
6. Step 6: Final answer
   x = 308,758.43