Finding the Third Proportional to 388,612.50 and 916,053

Step by Step Solution

1. Step 1: Write the proportion equation
   388,612.50 : 916,053 = 916,053 : x
2. Step 2: Convert to fraction form
   388,612.50/916,053 = 916,053/x
3. Step 3: Cross multiply
   388,612.50x = 916,053 × 916,053
4. Step 4: Simplify right side
   388,612.50x = 839,153,098,809
5. Step 5: Solve for x
   x = 839,153,098,809/388,612.50
6. Step 6: Final answer
   x = 2,159,356.94