Finding the Third Proportional to 362,217 and 786,664.50

Step by Step Solution

1. Step 1: Write the proportion equation
   362,217 : 786,664.50 = 786,664.50 : x
2. Step 2: Convert to fraction form
   362,217/786,664.50 = 786,664.50/x
3. Step 3: Cross multiply
   362,217x = 786,664.50 × 786,664.50
4. Step 4: Simplify right side
   362,217x = 618,841,035,560.25
5. Step 5: Solve for x
   x = 618,841,035,560.25/362,217
6. Step 6: Final answer
   x = 1,708,481.48