Finding the Third Proportional to 39,210 and 85,528.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,210 : 85,528.50 = 85,528.50 : x
2. Step 2: Convert to fraction form
   39,210/85,528.50 = 85,528.50/x
3. Step 3: Cross multiply
   39,210x = 85,528.50 × 85,528.50
4. Step 4: Simplify right side
   39,210x = 7,315,124,312.25
5. Step 5: Solve for x
   x = 7,315,124,312.25/39,210
6. Step 6: Final answer
   x = 186,562.72