Finding the Third Proportional to 917,740.50 and 1,290,078

Step by Step Solution

1. Step 1: Write the proportion equation
   917,740.50 : 1,290,078 = 1,290,078 : x
2. Step 2: Convert to fraction form
   917,740.50/1,290,078 = 1,290,078/x
3. Step 3: Cross multiply
   917,740.50x = 1,290,078 × 1,290,078
4. Step 4: Simplify right side
   917,740.50x = 1,664,301,246,084
5. Step 5: Solve for x
   x = 1,664,301,246,084/917,740.50
6. Step 6: Final answer
   x = 1,813,476.95