Finding the Third Proportional to 670,146 and 1,445,256

Step by Step Solution

1. Step 1: Write the proportion equation
   670,146 : 1,445,256 = 1,445,256 : x
2. Step 2: Convert to fraction form
   670,146/1,445,256 = 1,445,256/x
3. Step 3: Cross multiply
   670,146x = 1,445,256 × 1,445,256
4. Step 4: Simplify right side
   670,146x = 2,088,764,905,536
5. Step 5: Solve for x
   x = 2,088,764,905,536/670,146
6. Step 6: Final answer
   x = 3,116,880.36