Finding the Third Proportional to 9,945,145.50 and 21,420,583.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945,145.50 : 21,420,583.50 = 21,420,583.50 : x
2. Step 2: Convert to fraction form
   9,945,145.50/21,420,583.50 = 21,420,583.50/x
3. Step 3: Cross multiply
   9,945,145.50x = 21,420,583.50 × 21,420,583.50
4. Step 4: Simplify right side
   9,945,145.50x = 458,841,397,480,472.25
5. Step 5: Solve for x
   x = 458,841,397,480,472.25/9,945,145.50
6. Step 6: Final answer
   x = 46,137,223.18