Finding the Third Proportional to 9,872.30 and 21,419.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.30 : 21,419.02 = 21,419.02 : x
2. Step 2: Convert to fraction form
   9,872.30/21,419.02 = 21,419.02/x
3. Step 3: Cross multiply
   9,872.30x = 21,419.02 × 21,419.02
4. Step 4: Simplify right side
   9,872.30x = 458,774,230.34
5. Step 5: Solve for x
   x = 458,774,230.34/9,872.30
6. Step 6: Final answer
   x = 46,470.87