Finding the Third Proportional to 2,123,619 and 4,620,486

Step by Step Solution

1. Step 1: Write the proportion equation
   2,123,619 : 4,620,486 = 4,620,486 : x
2. Step 2: Convert to fraction form
   2,123,619/4,620,486 = 4,620,486/x
3. Step 3: Cross multiply
   2,123,619x = 4,620,486 × 4,620,486
4. Step 4: Simplify right side
   2,123,619x = 21,348,890,876,196
5. Step 5: Solve for x
   x = 21,348,890,876,196/2,123,619
6. Step 6: Final answer
   x = 10,053,070.20