Finding the Third Proportional to 428,364 and 601,719

Step by Step Solution

1. Step 1: Write the proportion equation
   428,364 : 601,719 = 601,719 : x
2. Step 2: Convert to fraction form
   428,364/601,719 = 601,719/x
3. Step 3: Cross multiply
   428,364x = 601,719 × 601,719
4. Step 4: Simplify right side
   428,364x = 362,065,754,961
5. Step 5: Solve for x
   x = 362,065,754,961/428,364
6. Step 6: Final answer
   x = 845,229.19