Finding the Third Proportional to 189,070.50 and 398,796

Step by Step Solution

1. Step 1: Write the proportion equation
   189,070.50 : 398,796 = 398,796 : x
2. Step 2: Convert to fraction form
   189,070.50/398,796 = 398,796/x
3. Step 3: Cross multiply
   189,070.50x = 398,796 × 398,796
4. Step 4: Simplify right side
   189,070.50x = 159,038,249,616
5. Step 5: Solve for x
   x = 159,038,249,616/189,070.50
6. Step 6: Final answer
   x = 841,158.45