Finding the Third Proportional to 20,643 and 45,241.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,643 : 45,241.50 = 45,241.50 : x
2. Step 2: Convert to fraction form
   20,643/45,241.50 = 45,241.50/x
3. Step 3: Cross multiply
   20,643x = 45,241.50 × 45,241.50
4. Step 4: Simplify right side
   20,643x = 2,046,793,322.25
5. Step 5: Solve for x
   x = 2,046,793,322.25/20,643
6. Step 6: Final answer
   x = 99,151.93