Finding the Third Proportional to 9,865,448 and 21,523,688

Step by Step Solution

1. Step 1: Write the proportion equation
   9,865,448 : 21,523,688 = 21,523,688 : x
2. Step 2: Convert to fraction form
   9,865,448/21,523,688 = 21,523,688/x
3. Step 3: Cross multiply
   9,865,448x = 21,523,688 × 21,523,688
4. Step 4: Simplify right side
   9,865,448x = 463,269,145,121,344
5. Step 5: Solve for x
   x = 463,269,145,121,344/9,865,448
6. Step 6: Final answer
   x = 46,958,753.94