Finding the Third Proportional to 254,115 and 374,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   254,115 : 374,131.50 = 374,131.50 : x
2. Step 2: Convert to fraction form
   254,115/374,131.50 = 374,131.50/x
3. Step 3: Cross multiply
   254,115x = 374,131.50 × 374,131.50
4. Step 4: Simplify right side
   254,115x = 139,974,379,292.25
5. Step 5: Solve for x
   x = 139,974,379,292.25/254,115
6. Step 6: Final answer
   x = 550,830.84