Finding the Third Proportional to 1,215,188 and 2,659,116

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,188 : 2,659,116 = 2,659,116 : x
2. Step 2: Convert to fraction form
   1,215,188/2,659,116 = 2,659,116/x
3. Step 3: Cross multiply
   1,215,188x = 2,659,116 × 2,659,116
4. Step 4: Simplify right side
   1,215,188x = 7,070,897,901,456
5. Step 5: Solve for x
   x = 7,070,897,901,456/1,215,188
6. Step 6: Final answer
   x = 5,818,768.70