Finding the Third Proportional to 612,489 and 894,541.50

Step by Step Solution

1. Step 1: Write the proportion equation
   612,489 : 894,541.50 = 894,541.50 : x
2. Step 2: Convert to fraction form
   612,489/894,541.50 = 894,541.50/x
3. Step 3: Cross multiply
   612,489x = 894,541.50 × 894,541.50
4. Step 4: Simplify right side
   612,489x = 800,204,495,222.25
5. Step 5: Solve for x
   x = 800,204,495,222.25/612,489
6. Step 6: Final answer
   x = 1,306,479.78