Finding the Third Proportional to 149,492.50 and 231,711

Step by Step Solution

1. Step 1: Write the proportion equation
   149,492.50 : 231,711 = 231,711 : x
2. Step 2: Convert to fraction form
   149,492.50/231,711 = 231,711/x
3. Step 3: Cross multiply
   149,492.50x = 231,711 × 231,711
4. Step 4: Simplify right side
   149,492.50x = 53,689,987,521
5. Step 5: Solve for x
   x = 53,689,987,521/149,492.50
6. Step 6: Final answer
   x = 359,148.37