Finding the Third Proportional to 558,147 and 891,076.50

Step by Step Solution

1. Step 1: Write the proportion equation
   558,147 : 891,076.50 = 891,076.50 : x
2. Step 2: Convert to fraction form
   558,147/891,076.50 = 891,076.50/x
3. Step 3: Cross multiply
   558,147x = 891,076.50 × 891,076.50
4. Step 4: Simplify right side
   558,147x = 794,017,328,852.25
5. Step 5: Solve for x
   x = 794,017,328,852.25/558,147
6. Step 6: Final answer
   x = 1,422,595.35