Finding the Third Proportional to 648,198 and 860,134.50

Step by Step Solution

1. Step 1: Write the proportion equation
   648,198 : 860,134.50 = 860,134.50 : x
2. Step 2: Convert to fraction form
   648,198/860,134.50 = 860,134.50/x
3. Step 3: Cross multiply
   648,198x = 860,134.50 × 860,134.50
4. Step 4: Simplify right side
   648,198x = 739,831,358,090.25
5. Step 5: Solve for x
   x = 739,831,358,090.25/648,198
6. Step 6: Final answer
   x = 1,141,366.31