Finding the Third Proportional to 517,870 and 824,383.50

Step by Step Solution

1. Step 1: Write the proportion equation
   517,870 : 824,383.50 = 824,383.50 : x
2. Step 2: Convert to fraction form
   517,870/824,383.50 = 824,383.50/x
3. Step 3: Cross multiply
   517,870x = 824,383.50 × 824,383.50
4. Step 4: Simplify right side
   517,870x = 679,608,155,072.25
5. Step 5: Solve for x
   x = 679,608,155,072.25/517,870
6. Step 6: Final answer
   x = 1,312,314.20