Finding the Third Proportional to 800,512 and 1,238,174

Step by Step Solution

1. Step 1: Write the proportion equation
   800,512 : 1,238,174 = 1,238,174 : x
2. Step 2: Convert to fraction form
   800,512/1,238,174 = 1,238,174/x
3. Step 3: Cross multiply
   800,512x = 1,238,174 × 1,238,174
4. Step 4: Simplify right side
   800,512x = 1,533,074,854,276
5. Step 5: Solve for x
   x = 1,533,074,854,276/800,512
6. Step 6: Final answer
   x = 1,915,117.89