Finding the Third Proportional to 58,509 and 141,507

Step by Step Solution

1. Step 1: Write the proportion equation
   58,509 : 141,507 = 141,507 : x
2. Step 2: Convert to fraction form
   58,509/141,507 = 141,507/x
3. Step 3: Cross multiply
   58,509x = 141,507 × 141,507
4. Step 4: Simplify right side
   58,509x = 20,024,231,049
5. Step 5: Solve for x
   x = 20,024,231,049/58,509
6. Step 6: Final answer
   x = 342,241.90