Finding the Third Proportional to 4,351,300 and 9,425,780

Step by Step Solution

1. Step 1: Write the proportion equation
   4,351,300 : 9,425,780 = 9,425,780 : x
2. Step 2: Convert to fraction form
   4,351,300/9,425,780 = 9,425,780/x
3. Step 3: Cross multiply
   4,351,300x = 9,425,780 × 9,425,780
4. Step 4: Simplify right side
   4,351,300x = 88,845,328,608,400
5. Step 5: Solve for x
   x = 88,845,328,608,400/4,351,300
6. Step 6: Final answer
   x = 20,418,111.51