Finding the Third Proportional to 412,878 and 603,385.50

Step by Step Solution

1. Step 1: Write the proportion equation
   412,878 : 603,385.50 = 603,385.50 : x
2. Step 2: Convert to fraction form
   412,878/603,385.50 = 603,385.50/x
3. Step 3: Cross multiply
   412,878x = 603,385.50 × 603,385.50
4. Step 4: Simplify right side
   412,878x = 364,074,061,610.25
5. Step 5: Solve for x
   x = 364,074,061,610.25/412,878
6. Step 6: Final answer
   x = 881,795.74