Finding the Third Proportional to 377,878.50 and 798,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   377,878.50 : 798,412.50 = 798,412.50 : x
2. Step 2: Convert to fraction form
   377,878.50/798,412.50 = 798,412.50/x
3. Step 3: Cross multiply
   377,878.50x = 798,412.50 × 798,412.50
4. Step 4: Simplify right side
   377,878.50x = 637,462,520,156.25
5. Step 5: Solve for x
   x = 637,462,520,156.25/377,878.50
6. Step 6: Final answer
   x = 1,686,951.02