Finding the Third Proportional to 915,879 and 1,401,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   915,879 : 1,401,088.50 = 1,401,088.50 : x
2. Step 2: Convert to fraction form
   915,879/1,401,088.50 = 1,401,088.50/x
3. Step 3: Cross multiply
   915,879x = 1,401,088.50 × 1,401,088.50
4. Step 4: Simplify right side
   915,879x = 1,963,048,984,832.25
5. Step 5: Solve for x
   x = 1,963,048,984,832.25/915,879
6. Step 6: Final answer
   x = 2,143,349.71