Finding the Third Proportional to 2,181,313 and 4,665,890

Step by Step Solution

1. Step 1: Write the proportion equation
   2,181,313 : 4,665,890 = 4,665,890 : x
2. Step 2: Convert to fraction form
   2,181,313/4,665,890 = 4,665,890/x
3. Step 3: Cross multiply
   2,181,313x = 4,665,890 × 4,665,890
4. Step 4: Simplify right side
   2,181,313x = 21,770,529,492,100
5. Step 5: Solve for x
   x = 21,770,529,492,100/2,181,313
6. Step 6: Final answer
   x = 9,980,470.25