Finding the Third Proportional to 2,643,194 and 4,200,987

Step by Step Solution

1. Step 1: Write the proportion equation
   2,643,194 : 4,200,987 = 4,200,987 : x
2. Step 2: Convert to fraction form
   2,643,194/4,200,987 = 4,200,987/x
3. Step 3: Cross multiply
   2,643,194x = 4,200,987 × 4,200,987
4. Step 4: Simplify right side
   2,643,194x = 17,648,291,774,169
5. Step 5: Solve for x
   x = 17,648,291,774,169/2,643,194
6. Step 6: Final answer
   x = 6,676,880.99