Finding the Third Proportional to 91,155 and 139,924

Step by Step Solution

1. Step 1: Write the proportion equation
   91,155 : 139,924 = 139,924 : x
2. Step 2: Convert to fraction form
   91,155/139,924 = 139,924/x
3. Step 3: Cross multiply
   91,155x = 139,924 × 139,924
4. Step 4: Simplify right side
   91,155x = 19,578,725,776
5. Step 5: Solve for x
   x = 19,578,725,776/91,155
6. Step 6: Final answer
   x = 214,784.99