Finding the Third Proportional to 286,282 and 388,803.75

Step by Step Solution

1. Step 1: Write the proportion equation
   286,282 : 388,803.75 = 388,803.75 : x
2. Step 2: Convert to fraction form
   286,282/388,803.75 = 388,803.75/x
3. Step 3: Cross multiply
   286,282x = 388,803.75 × 388,803.75
4. Step 4: Simplify right side
   286,282x = 151,168,356,014.06
5. Step 5: Solve for x
   x = 151,168,356,014.06/286,282
6. Step 6: Final answer
   x = 528,040.03