Finding the Third Proportional to 4,499,594 and 9,899,692

Step by Step Solution

1. Step 1: Write the proportion equation
   4,499,594 : 9,899,692 = 9,899,692 : x
2. Step 2: Convert to fraction form
   4,499,594/9,899,692 = 9,899,692/x
3. Step 3: Cross multiply
   4,499,594x = 9,899,692 × 9,899,692
4. Step 4: Simplify right side
   4,499,594x = 98,003,901,694,864
5. Step 5: Solve for x
   x = 98,003,901,694,864/4,499,594
6. Step 6: Final answer
   x = 21,780,609.92