Finding the Third Proportional to 21,130.50 and 43,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,130.50 : 43,354.50 = 43,354.50 : x
2. Step 2: Convert to fraction form
   21,130.50/43,354.50 = 43,354.50/x
3. Step 3: Cross multiply
   21,130.50x = 43,354.50 × 43,354.50
4. Step 4: Simplify right side
   21,130.50x = 1,879,612,670.25
5. Step 5: Solve for x
   x = 1,879,612,670.25/21,130.50
6. Step 6: Final answer
   x = 88,952.59