Finding the Third Proportional to 912,900 and 1,970,142

Step by Step Solution

1. Step 1: Write the proportion equation
   912,900 : 1,970,142 = 1,970,142 : x
2. Step 2: Convert to fraction form
   912,900/1,970,142 = 1,970,142/x
3. Step 3: Cross multiply
   912,900x = 1,970,142 × 1,970,142
4. Step 4: Simplify right side
   912,900x = 3,881,459,500,164
5. Step 5: Solve for x
   x = 3,881,459,500,164/912,900
6. Step 6: Final answer
   x = 4,251,790.45