Finding the Third Proportional to 85,520 and 134,153.50

Step by Step Solution

1. Step 1: Write the proportion equation
   85,520 : 134,153.50 = 134,153.50 : x
2. Step 2: Convert to fraction form
   85,520/134,153.50 = 134,153.50/x
3. Step 3: Cross multiply
   85,520x = 134,153.50 × 134,153.50
4. Step 4: Simplify right side
   85,520x = 17,997,161,562.25
5. Step 5: Solve for x
   x = 17,997,161,562.25/85,520
6. Step 6: Final answer
   x = 210,443.89