Finding the Third Proportional to 180,091.50 and 388,113

Step by Step Solution

1. Step 1: Write the proportion equation
   180,091.50 : 388,113 = 388,113 : x
2. Step 2: Convert to fraction form
   180,091.50/388,113 = 388,113/x
3. Step 3: Cross multiply
   180,091.50x = 388,113 × 388,113
4. Step 4: Simplify right side
   180,091.50x = 150,631,700,769
5. Step 5: Solve for x
   x = 150,631,700,769/180,091.50
6. Step 6: Final answer
   x = 836,417.60