Finding the Third Proportional to 177,574.50 and 390,141

Step by Step Solution

1. Step 1: Write the proportion equation
   177,574.50 : 390,141 = 390,141 : x
2. Step 2: Convert to fraction form
   177,574.50/390,141 = 390,141/x
3. Step 3: Cross multiply
   177,574.50x = 390,141 × 390,141
4. Step 4: Simplify right side
   177,574.50x = 152,209,999,881
5. Step 5: Solve for x
   x = 152,209,999,881/177,574.50
6. Step 6: Final answer
   x = 857,161.36