Finding the Third Proportional to 21,366,640 and 43,488,412

Step by Step Solution

1. Step 1: Write the proportion equation
   21,366,640 : 43,488,412 = 43,488,412 : x
2. Step 2: Convert to fraction form
   21,366,640/43,488,412 = 43,488,412/x
3. Step 3: Cross multiply
   21,366,640x = 43,488,412 × 43,488,412
4. Step 4: Simplify right side
   21,366,640x = 1,891,241,978,281,744
5. Step 5: Solve for x
   x = 1,891,241,978,281,744/21,366,640
6. Step 6: Final answer
   x = 88,513,775.60