Finding the Third Proportional to 450,156 and 712,818

Step by Step Solution

1. Step 1: Write the proportion equation
   450,156 : 712,818 = 712,818 : x
2. Step 2: Convert to fraction form
   450,156/712,818 = 712,818/x
3. Step 3: Cross multiply
   450,156x = 712,818 × 712,818
4. Step 4: Simplify right side
   450,156x = 508,109,501,124
5. Step 5: Solve for x
   x = 508,109,501,124/450,156
6. Step 6: Final answer
   x = 1,128,740.93