Finding the Third Proportional to 153,469.69 and 314,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,469.69 : 314,320.50 = 314,320.50 : x
2. Step 2: Convert to fraction form
   153,469.69/314,320.50 = 314,320.50/x
3. Step 3: Cross multiply
   153,469.69x = 314,320.50 × 314,320.50
4. Step 4: Simplify right side
   153,469.69x = 98,797,376,720.25
5. Step 5: Solve for x
   x = 98,797,376,720.25/153,469.69
6. Step 6: Final answer
   x = 643,758.25