Finding the Third Proportional to 4,612,788 and 9,907,596

Step by Step Solution

1. Step 1: Write the proportion equation
   4,612,788 : 9,907,596 = 9,907,596 : x
2. Step 2: Convert to fraction form
   4,612,788/9,907,596 = 9,907,596/x
3. Step 3: Cross multiply
   4,612,788x = 9,907,596 × 9,907,596
4. Step 4: Simplify right side
   4,612,788x = 98,160,458,499,216
5. Step 5: Solve for x
   x = 98,160,458,499,216/4,612,788
6. Step 6: Final answer
   x = 21,280,071.51