Finding the Third Proportional to 149,478 and 222,088.50

Step by Step Solution

1. Step 1: Write the proportion equation
   149,478 : 222,088.50 = 222,088.50 : x
2. Step 2: Convert to fraction form
   149,478/222,088.50 = 222,088.50/x
3. Step 3: Cross multiply
   149,478x = 222,088.50 × 222,088.50
4. Step 4: Simplify right side
   149,478x = 49,323,301,832.25
5. Step 5: Solve for x
   x = 49,323,301,832.25/149,478
6. Step 6: Final answer
   x = 329,970.31