Finding the Third Proportional to 40,860 and 57,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   40,860 : 57,820.50 = 57,820.50 : x
2. Step 2: Convert to fraction form
   40,860/57,820.50 = 57,820.50/x
3. Step 3: Cross multiply
   40,860x = 57,820.50 × 57,820.50
4. Step 4: Simplify right side
   40,860x = 3,343,210,220.25
5. Step 5: Solve for x
   x = 3,343,210,220.25/40,860
6. Step 6: Final answer
   x = 81,821.10