Finding the Third Proportional to 387,767.50 and 582,061

Step by Step Solution

1. Step 1: Write the proportion equation
   387,767.50 : 582,061 = 582,061 : x
2. Step 2: Convert to fraction form
   387,767.50/582,061 = 582,061/x
3. Step 3: Cross multiply
   387,767.50x = 582,061 × 582,061
4. Step 4: Simplify right side
   387,767.50x = 338,795,007,721
5. Step 5: Solve for x
   x = 338,795,007,721/387,767.50
6. Step 6: Final answer
   x = 873,706.56