Finding the Third Proportional to 170,316 and 358,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,316 : 358,276.50 = 358,276.50 : x
2. Step 2: Convert to fraction form
   170,316/358,276.50 = 358,276.50/x
3. Step 3: Cross multiply
   170,316x = 358,276.50 × 358,276.50
4. Step 4: Simplify right side
   170,316x = 128,362,050,452.25
5. Step 5: Solve for x
   x = 128,362,050,452.25/170,316
6. Step 6: Final answer
   x = 753,669.95