Finding the Third Proportional to 402,138 and 883,976.63

Step by Step Solution

1. Step 1: Write the proportion equation
   402,138 : 883,976.63 = 883,976.63 : x
2. Step 2: Convert to fraction form
   402,138/883,976.63 = 883,976.63/x
3. Step 3: Cross multiply
   402,138x = 883,976.63 × 883,976.63
4. Step 4: Simplify right side
   402,138x = 781,414,673,546.39
5. Step 5: Solve for x
   x = 781,414,673,546.39/402,138
6. Step 6: Final answer
   x = 1,943,150.54