Finding the Third Proportional to 612,076.50 and 918,117

Step by Step Solution

1. Step 1: Write the proportion equation
   612,076.50 : 918,117 = 918,117 : x
2. Step 2: Convert to fraction form
   612,076.50/918,117 = 918,117/x
3. Step 3: Cross multiply
   612,076.50x = 918,117 × 918,117
4. Step 4: Simplify right side
   612,076.50x = 842,938,825,689
5. Step 5: Solve for x
   x = 842,938,825,689/612,076.50
6. Step 6: Final answer
   x = 1,377,178.88