Finding the Third Proportional to 141,315 and 212,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,315 : 212,275.50 = 212,275.50 : x
2. Step 2: Convert to fraction form
   141,315/212,275.50 = 212,275.50/x
3. Step 3: Cross multiply
   141,315x = 212,275.50 × 212,275.50
4. Step 4: Simplify right side
   141,315x = 45,060,887,900.25
5. Step 5: Solve for x
   x = 45,060,887,900.25/141,315
6. Step 6: Final answer
   x = 318,868.40