Finding the Third Proportional to 56,411 and 123,891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,411 : 123,891.50 = 123,891.50 : x
2. Step 2: Convert to fraction form
   56,411/123,891.50 = 123,891.50/x
3. Step 3: Cross multiply
   56,411x = 123,891.50 × 123,891.50
4. Step 4: Simplify right side
   56,411x = 15,349,103,772.25
5. Step 5: Solve for x
   x = 15,349,103,772.25/56,411
6. Step 6: Final answer
   x = 272,094.16