Finding the Third Proportional to 607,208 and 891,116

Step by Step Solution

1. Step 1: Write the proportion equation
   607,208 : 891,116 = 891,116 : x
2. Step 2: Convert to fraction form
   607,208/891,116 = 891,116/x
3. Step 3: Cross multiply
   607,208x = 891,116 × 891,116
4. Step 4: Simplify right side
   607,208x = 794,087,725,456
5. Step 5: Solve for x
   x = 794,087,725,456/607,208
6. Step 6: Final answer
   x = 1,307,768.88