Finding the Third Proportional to 602,642 and 911,738.75

Step by Step Solution

1. Step 1: Write the proportion equation
   602,642 : 911,738.75 = 911,738.75 : x
2. Step 2: Convert to fraction form
   602,642/911,738.75 = 911,738.75/x
3. Step 3: Cross multiply
   602,642x = 911,738.75 × 911,738.75
4. Step 4: Simplify right side
   602,642x = 831,267,548,251.56
5. Step 5: Solve for x
   x = 831,267,548,251.56/602,642
6. Step 6: Final answer
   x = 1,379,372.08