Finding the Third Proportional to 196,116 and 423,340

Step by Step Solution

1. Step 1: Write the proportion equation
   196,116 : 423,340 = 423,340 : x
2. Step 2: Convert to fraction form
   196,116/423,340 = 423,340/x
3. Step 3: Cross multiply
   196,116x = 423,340 × 423,340
4. Step 4: Simplify right side
   196,116x = 179,216,755,600
5. Step 5: Solve for x
   x = 179,216,755,600/196,116
6. Step 6: Final answer
   x = 913,830.36