Finding the Third Proportional to 9,902,495 and 21,269,223

Step by Step Solution

1. Step 1: Write the proportion equation
   9,902,495 : 21,269,223 = 21,269,223 : x
2. Step 2: Convert to fraction form
   9,902,495/21,269,223 = 21,269,223/x
3. Step 3: Cross multiply
   9,902,495x = 21,269,223 × 21,269,223
4. Step 4: Simplify right side
   9,902,495x = 452,379,847,023,729
5. Step 5: Solve for x
   x = 452,379,847,023,729/9,902,495
6. Step 6: Final answer
   x = 45,683,420.90