Finding the Third Proportional to 155,458.50 and 307,278

Step by Step Solution

1. Step 1: Write the proportion equation
   155,458.50 : 307,278 = 307,278 : x
2. Step 2: Convert to fraction form
   155,458.50/307,278 = 307,278/x
3. Step 3: Cross multiply
   155,458.50x = 307,278 × 307,278
4. Step 4: Simplify right side
   155,458.50x = 94,419,769,284
5. Step 5: Solve for x
   x = 94,419,769,284/155,458.50
6. Step 6: Final answer
   x = 607,363.18