Finding the Third Proportional to 388,827 and 804,646.50

Step by Step Solution

1. Step 1: Write the proportion equation
   388,827 : 804,646.50 = 804,646.50 : x
2. Step 2: Convert to fraction form
   388,827/804,646.50 = 804,646.50/x
3. Step 3: Cross multiply
   388,827x = 804,646.50 × 804,646.50
4. Step 4: Simplify right side
   388,827x = 647,455,989,962.25
5. Step 5: Solve for x
   x = 647,455,989,962.25/388,827
6. Step 6: Final answer
   x = 1,665,151.83