Finding the Third Proportional to 238,477.50 and 521,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   238,477.50 : 521,788.50 = 521,788.50 : x
2. Step 2: Convert to fraction form
   238,477.50/521,788.50 = 521,788.50/x
3. Step 3: Cross multiply
   238,477.50x = 521,788.50 × 521,788.50
4. Step 4: Simplify right side
   238,477.50x = 272,263,238,732.25
5. Step 5: Solve for x
   x = 272,263,238,732.25/238,477.50
6. Step 6: Final answer
   x = 1,141,672.65