Finding the Third Proportional to 156,406.50 and 251,829

Step by Step Solution

1. Step 1: Write the proportion equation
   156,406.50 : 251,829 = 251,829 : x
2. Step 2: Convert to fraction form
   156,406.50/251,829 = 251,829/x
3. Step 3: Cross multiply
   156,406.50x = 251,829 × 251,829
4. Step 4: Simplify right side
   156,406.50x = 63,417,845,241
5. Step 5: Solve for x
   x = 63,417,845,241/156,406.50
6. Step 6: Final answer
   x = 405,468.09