Finding the Third Proportional to 148,900 and 314,360

Step by Step Solution

1. Step 1: Write the proportion equation
   148,900 : 314,360 = 314,360 : x
2. Step 2: Convert to fraction form
   148,900/314,360 = 314,360/x
3. Step 3: Cross multiply
   148,900x = 314,360 × 314,360
4. Step 4: Simplify right side
   148,900x = 98,822,209,600
5. Step 5: Solve for x
   x = 98,822,209,600/148,900
6. Step 6: Final answer
   x = 663,681.73