Finding the Third Proportional to 156,687 and 369,811.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,687 : 369,811.50 = 369,811.50 : x
2. Step 2: Convert to fraction form
   156,687/369,811.50 = 369,811.50/x
3. Step 3: Cross multiply
   156,687x = 369,811.50 × 369,811.50
4. Step 4: Simplify right side
   156,687x = 136,760,545,532.25
5. Step 5: Solve for x
   x = 136,760,545,532.25/156,687
6. Step 6: Final answer
   x = 872,826.37