Finding the Third Proportional to 101,065.50 and 168,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   101,065.50 : 168,428.50 = 168,428.50 : x
2. Step 2: Convert to fraction form
   101,065.50/168,428.50 = 168,428.50/x
3. Step 3: Cross multiply
   101,065.50x = 168,428.50 × 168,428.50
4. Step 4: Simplify right side
   101,065.50x = 28,368,159,612.25
5. Step 5: Solve for x
   x = 28,368,159,612.25/101,065.50
6. Step 6: Final answer
   x = 280,690.84