Finding the Third Proportional to 205,963.31 and 434,070

Step by Step Solution

1. Step 1: Write the proportion equation
   205,963.31 : 434,070 = 434,070 : x
2. Step 2: Convert to fraction form
   205,963.31/434,070 = 434,070/x
3. Step 3: Cross multiply
   205,963.31x = 434,070 × 434,070
4. Step 4: Simplify right side
   205,963.31x = 188,416,764,900
5. Step 5: Solve for x
   x = 188,416,764,900/205,963.31
6. Step 6: Final answer
   x = 914,807.41