Finding the Third Proportional to 196,913.53 and 431,947.69

Step by Step Solution

1. Step 1: Write the proportion equation
   196,913.53 : 431,947.69 = 431,947.69 : x
2. Step 2: Convert to fraction form
   196,913.53/431,947.69 = 431,947.69/x
3. Step 3: Cross multiply
   196,913.53x = 431,947.69 × 431,947.69
4. Step 4: Simplify right side
   196,913.53x = 186,578,804,736.60
5. Step 5: Solve for x
   x = 186,578,804,736.60/196,913.53
6. Step 6: Final answer
   x = 947,516.42