Finding the Third Proportional to 3,979,458 and 8,526,726

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979,458 : 8,526,726 = 8,526,726 : x
2. Step 2: Convert to fraction form
   3,979,458/8,526,726 = 8,526,726/x
3. Step 3: Cross multiply
   3,979,458x = 8,526,726 × 8,526,726
4. Step 4: Simplify right side
   3,979,458x = 72,705,056,279,076
5. Step 5: Solve for x
   x = 72,705,056,279,076/3,979,458
6. Step 6: Final answer
   x = 18,270,090.12