Finding the Third Proportional to 168,642 and 359,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   168,642 : 359,131.50 = 359,131.50 : x
2. Step 2: Convert to fraction form
   168,642/359,131.50 = 359,131.50/x
3. Step 3: Cross multiply
   168,642x = 359,131.50 × 359,131.50
4. Step 4: Simplify right side
   168,642x = 128,975,434,292.25
5. Step 5: Solve for x
   x = 128,975,434,292.25/168,642
6. Step 6: Final answer
   x = 764,788.33