Finding the Third Proportional to 558,925 and 790,111

Step by Step Solution

1. Step 1: Write the proportion equation
   558,925 : 790,111 = 790,111 : x
2. Step 2: Convert to fraction form
   558,925/790,111 = 790,111/x
3. Step 3: Cross multiply
   558,925x = 790,111 × 790,111
4. Step 4: Simplify right side
   558,925x = 624,275,392,321
5. Step 5: Solve for x
   x = 624,275,392,321/558,925
6. Step 6: Final answer
   x = 1,116,921.58