Finding the Third Proportional to 2,128,216 and 4,670,343

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,216 : 4,670,343 = 4,670,343 : x
2. Step 2: Convert to fraction form
   2,128,216/4,670,343 = 4,670,343/x
3. Step 3: Cross multiply
   2,128,216x = 4,670,343 × 4,670,343
4. Step 4: Simplify right side
   2,128,216x = 21,812,103,737,649
5. Step 5: Solve for x
   x = 21,812,103,737,649/2,128,216
6. Step 6: Final answer
   x = 10,249,008.44