Finding the Third Proportional to 147,154 and 317,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,154 : 317,622.50 = 317,622.50 : x
2. Step 2: Convert to fraction form
   147,154/317,622.50 = 317,622.50/x
3. Step 3: Cross multiply
   147,154x = 317,622.50 × 317,622.50
4. Step 4: Simplify right side
   147,154x = 100,884,052,506.25
5. Step 5: Solve for x
   x = 100,884,052,506.25/147,154
6. Step 6: Final answer
   x = 685,567.86