Finding the Third Proportional to 9,340.50 and 19,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.50 : 19,915.50 = 19,915.50 : x
2. Step 2: Convert to fraction form
   9,340.50/19,915.50 = 19,915.50/x
3. Step 3: Cross multiply
   9,340.50x = 19,915.50 × 19,915.50
4. Step 4: Simplify right side
   9,340.50x = 396,627,140.25
5. Step 5: Solve for x
   x = 396,627,140.25/9,340.50
6. Step 6: Final answer
   x = 42,463.16