Finding the Third Proportional to 308,397 and 492,115.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,397 : 492,115.50 = 492,115.50 : x
2. Step 2: Convert to fraction form
   308,397/492,115.50 = 492,115.50/x
3. Step 3: Cross multiply
   308,397x = 492,115.50 × 492,115.50
4. Step 4: Simplify right side
   308,397x = 242,177,665,340.25
5. Step 5: Solve for x
   x = 242,177,665,340.25/308,397
6. Step 6: Final answer
   x = 785,278.93