Finding the Third Proportional to 9,964,643.50 and 21,790,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,964,643.50 : 21,790,423.50 = 21,790,423.50 : x
2. Step 2: Convert to fraction form
   9,964,643.50/21,790,423.50 = 21,790,423.50/x
3. Step 3: Cross multiply
   9,964,643.50x = 21,790,423.50 × 21,790,423.50
4. Step 4: Simplify right side
   9,964,643.50x = 474,822,556,309,352.25
5. Step 5: Solve for x
   x = 474,822,556,309,352.25/9,964,643.50
6. Step 6: Final answer
   x = 47,650,731.94