Finding the Third Proportional to 869,011.50 and 1,272,408

Step by Step Solution

1. Step 1: Write the proportion equation
   869,011.50 : 1,272,408 = 1,272,408 : x
2. Step 2: Convert to fraction form
   869,011.50/1,272,408 = 1,272,408/x
3. Step 3: Cross multiply
   869,011.50x = 1,272,408 × 1,272,408
4. Step 4: Simplify right side
   869,011.50x = 1,619,022,118,464
5. Step 5: Solve for x
   x = 1,619,022,118,464/869,011.50
6. Step 6: Final answer
   x = 1,863,061.79