Finding the Third Proportional to 2,160,699 and 4,641,657

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160,699 : 4,641,657 = 4,641,657 : x
2. Step 2: Convert to fraction form
   2,160,699/4,641,657 = 4,641,657/x
3. Step 3: Cross multiply
   2,160,699x = 4,641,657 × 4,641,657
4. Step 4: Simplify right side
   2,160,699x = 21,544,979,705,649
5. Step 5: Solve for x
   x = 21,544,979,705,649/2,160,699
6. Step 6: Final answer
   x = 9,971,300.82