Finding the Third Proportional to 718,536 and 999,056.25

Step by Step Solution

1. Step 1: Write the proportion equation
   718,536 : 999,056.25 = 999,056.25 : x
2. Step 2: Convert to fraction form
   718,536/999,056.25 = 999,056.25/x
3. Step 3: Cross multiply
   718,536x = 999,056.25 × 999,056.25
4. Step 4: Simplify right side
   718,536x = 998,113,390,664.06
5. Step 5: Solve for x
   x = 998,113,390,664.06/718,536
6. Step 6: Final answer
   x = 1,389,093.09