Finding the Third Proportional to 602,644 and 911,741.50

Step by Step Solution

1. Step 1: Write the proportion equation
   602,644 : 911,741.50 = 911,741.50 : x
2. Step 2: Convert to fraction form
   602,644/911,741.50 = 911,741.50/x
3. Step 3: Cross multiply
   602,644x = 911,741.50 × 911,741.50
4. Step 4: Simplify right side
   602,644x = 831,272,562,822.25
5. Step 5: Solve for x
   x = 831,272,562,822.25/602,644
6. Step 6: Final answer
   x = 1,379,375.82