Finding the Third Proportional to 9,898.50 and 21,011.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898.50 : 21,011.63 = 21,011.63 : x
2. Step 2: Convert to fraction form
   9,898.50/21,011.63 = 21,011.63/x
3. Step 3: Cross multiply
   9,898.50x = 21,011.63 × 21,011.63
4. Step 4: Simplify right side
   9,898.50x = 441,488,385.14
5. Step 5: Solve for x
   x = 441,488,385.14/9,898.50
6. Step 6: Final answer
   x = 44,601.54