Finding the Third Proportional to 21,240 and 29,713.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,240 : 29,713.50 = 29,713.50 : x
2. Step 2: Convert to fraction form
   21,240/29,713.50 = 29,713.50/x
3. Step 3: Cross multiply
   21,240x = 29,713.50 × 29,713.50
4. Step 4: Simplify right side
   21,240x = 882,892,082.25
5. Step 5: Solve for x
   x = 882,892,082.25/21,240
6. Step 6: Final answer
   x = 41,567.42