Finding the Third Proportional to 2,160,221 and 4,727,290

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160,221 : 4,727,290 = 4,727,290 : x
2. Step 2: Convert to fraction form
   2,160,221/4,727,290 = 4,727,290/x
3. Step 3: Cross multiply
   2,160,221x = 4,727,290 × 4,727,290
4. Step 4: Simplify right side
   2,160,221x = 22,347,270,744,100
5. Step 5: Solve for x
   x = 22,347,270,744,100/2,160,221
6. Step 6: Final answer
   x = 10,344,900.24