Finding the Third Proportional to 9,690.25 and 20,929.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,690.25 : 20,929.50 = 20,929.50 : x
2. Step 2: Convert to fraction form
   9,690.25/20,929.50 = 20,929.50/x
3. Step 3: Cross multiply
   9,690.25x = 20,929.50 × 20,929.50
4. Step 4: Simplify right side
   9,690.25x = 438,043,970.25
5. Step 5: Solve for x
   x = 438,043,970.25/9,690.25
6. Step 6: Final answer
   x = 45,204.61