Finding the Third Proportional to 155,969.50 and 319,316

Step by Step Solution

1. Step 1: Write the proportion equation
   155,969.50 : 319,316 = 319,316 : x
2. Step 2: Convert to fraction form
   155,969.50/319,316 = 319,316/x
3. Step 3: Cross multiply
   155,969.50x = 319,316 × 319,316
4. Step 4: Simplify right side
   155,969.50x = 101,962,707,856
5. Step 5: Solve for x
   x = 101,962,707,856/155,969.50
6. Step 6: Final answer
   x = 653,734.92