Finding the Third Proportional to 800,172 and 1,238,166

Step by Step Solution

1. Step 1: Write the proportion equation
   800,172 : 1,238,166 = 1,238,166 : x
2. Step 2: Convert to fraction form
   800,172/1,238,166 = 1,238,166/x
3. Step 3: Cross multiply
   800,172x = 1,238,166 × 1,238,166
4. Step 4: Simplify right side
   800,172x = 1,533,055,043,556
5. Step 5: Solve for x
   x = 1,533,055,043,556/800,172
6. Step 6: Final answer
   x = 1,915,906.88