Finding the Third Proportional to 1,939,329 and 4,220,478

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,329 : 4,220,478 = 4,220,478 : x
2. Step 2: Convert to fraction form
   1,939,329/4,220,478 = 4,220,478/x
3. Step 3: Cross multiply
   1,939,329x = 4,220,478 × 4,220,478
4. Step 4: Simplify right side
   1,939,329x = 17,812,434,548,484
5. Step 5: Solve for x
   x = 17,812,434,548,484/1,939,329
6. Step 6: Final answer
   x = 9,184,844.11