Finding the Third Proportional to 170,817 and 365,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,817 : 365,281.50 = 365,281.50 : x
2. Step 2: Convert to fraction form
   170,817/365,281.50 = 365,281.50/x
3. Step 3: Cross multiply
   170,817x = 365,281.50 × 365,281.50
4. Step 4: Simplify right side
   170,817x = 133,430,574,242.25
5. Step 5: Solve for x
   x = 133,430,574,242.25/170,817
6. Step 6: Final answer
   x = 781,131.70