Finding the Third Proportional to 1,858,005 and 2,715,312

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858,005 : 2,715,312 = 2,715,312 : x
2. Step 2: Convert to fraction form
   1,858,005/2,715,312 = 2,715,312/x
3. Step 3: Cross multiply
   1,858,005x = 2,715,312 × 2,715,312
4. Step 4: Simplify right side
   1,858,005x = 7,372,919,257,344
5. Step 5: Solve for x
   x = 7,372,919,257,344/1,858,005
6. Step 6: Final answer
   x = 3,968,191.29