Finding the Third Proportional to 387,036 and 910,662.75

Step by Step Solution

1. Step 1: Write the proportion equation
   387,036 : 910,662.75 = 910,662.75 : x
2. Step 2: Convert to fraction form
   387,036/910,662.75 = 910,662.75/x
3. Step 3: Cross multiply
   387,036x = 910,662.75 × 910,662.75
4. Step 4: Simplify right side
   387,036x = 829,306,644,237.56
5. Step 5: Solve for x
   x = 829,306,644,237.56/387,036
6. Step 6: Final answer
   x = 2,142,711.90