Finding the Third Proportional to 638,316 and 945,150

Step by Step Solution

1. Step 1: Write the proportion equation
   638,316 : 945,150 = 945,150 : x
2. Step 2: Convert to fraction form
   638,316/945,150 = 945,150/x
3. Step 3: Cross multiply
   638,316x = 945,150 × 945,150
4. Step 4: Simplify right side
   638,316x = 893,308,522,500
5. Step 5: Solve for x
   x = 893,308,522,500/638,316
6. Step 6: Final answer
   x = 1,399,476.94