Finding the Third Proportional to 387,085.50 and 910,732.50

Step by Step Solution

1. Step 1: Write the proportion equation
   387,085.50 : 910,732.50 = 910,732.50 : x
2. Step 2: Convert to fraction form
   387,085.50/910,732.50 = 910,732.50/x
3. Step 3: Cross multiply
   387,085.50x = 910,732.50 × 910,732.50
4. Step 4: Simplify right side
   387,085.50x = 829,433,686,556.25
5. Step 5: Solve for x
   x = 829,433,686,556.25/387,085.50
6. Step 6: Final answer
   x = 2,142,766.10