Finding the Third Proportional to 85,516 and 134,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,516 : 134,147.50 = 134,147.50 : x
2. Step 2: Convert to fraction form
   85,516/134,147.50 = 134,147.50/x
3. Step 3: Cross multiply
   85,516x = 134,147.50 × 134,147.50
4. Step 4: Simplify right side
   85,516x = 17,995,551,756.25
5. Step 5: Solve for x
   x = 17,995,551,756.25/85,516
6. Step 6: Final answer
   x = 210,434.91