Finding the Third Proportional to 812,683 and 1,216,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   812,683 : 1,216,081.50 = 1,216,081.50 : x
2. Step 2: Convert to fraction form
   812,683/1,216,081.50 = 1,216,081.50/x
3. Step 3: Cross multiply
   812,683x = 1,216,081.50 × 1,216,081.50
4. Step 4: Simplify right side
   812,683x = 1,478,854,214,642.25
5. Step 5: Solve for x
   x = 1,478,854,214,642.25/812,683
6. Step 6: Final answer
   x = 1,819,718.41