Finding the Third Proportional to 450,738 and 918,175.50

Step by Step Solution

1. Step 1: Write the proportion equation
   450,738 : 918,175.50 = 918,175.50 : x
2. Step 2: Convert to fraction form
   450,738/918,175.50 = 918,175.50/x
3. Step 3: Cross multiply
   450,738x = 918,175.50 × 918,175.50
4. Step 4: Simplify right side
   450,738x = 843,046,248,800.25
5. Step 5: Solve for x
   x = 843,046,248,800.25/450,738
6. Step 6: Final answer
   x = 1,870,368.70