Finding the Third Proportional to 163,342.83 and 358,123.78

Step by Step Solution

1. Step 1: Write the proportion equation
   163,342.83 : 358,123.78 = 358,123.78 : x
2. Step 2: Convert to fraction form
   163,342.83/358,123.78 = 358,123.78/x
3. Step 3: Cross multiply
   163,342.83x = 358,123.78 × 358,123.78
4. Step 4: Simplify right side
   163,342.83x = 128,252,642,696.80
5. Step 5: Solve for x
   x = 128,252,642,696.80/163,342.83
6. Step 6: Final answer
   x = 785,174.62