Finding the Third Proportional to 2,128,229 and 4,670,356

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,229 : 4,670,356 = 4,670,356 : x
2. Step 2: Convert to fraction form
   2,128,229/4,670,356 = 4,670,356/x
3. Step 3: Cross multiply
   2,128,229x = 4,670,356 × 4,670,356
4. Step 4: Simplify right side
   2,128,229x = 21,812,225,166,736
5. Step 5: Solve for x
   x = 21,812,225,166,736/2,128,229
6. Step 6: Final answer
   x = 10,249,002.89