Finding the Third Proportional to 1,215,199.50 and 2,659,143

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,199.50 : 2,659,143 = 2,659,143 : x
2. Step 2: Convert to fraction form
   1,215,199.50/2,659,143 = 2,659,143/x
3. Step 3: Cross multiply
   1,215,199.50x = 2,659,143 × 2,659,143
4. Step 4: Simplify right side
   1,215,199.50x = 7,071,041,494,449
5. Step 5: Solve for x
   x = 7,071,041,494,449/1,215,199.50
6. Step 6: Final answer
   x = 5,818,831.80