Finding the Third Proportional to 155,547 and 317,653.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,547 : 317,653.50 = 317,653.50 : x
2. Step 2: Convert to fraction form
   155,547/317,653.50 = 317,653.50/x
3. Step 3: Cross multiply
   155,547x = 317,653.50 × 317,653.50
4. Step 4: Simplify right side
   155,547x = 100,903,746,062.25
5. Step 5: Solve for x
   x = 100,903,746,062.25/155,547
6. Step 6: Final answer
   x = 648,702.62