Finding the Third Proportional to 240,212 and 556,030

Step by Step Solution

1. Step 1: Write the proportion equation
   240,212 : 556,030 = 556,030 : x
2. Step 2: Convert to fraction form
   240,212/556,030 = 556,030/x
3. Step 3: Cross multiply
   240,212x = 556,030 × 556,030
4. Step 4: Simplify right side
   240,212x = 309,169,360,900
5. Step 5: Solve for x
   x = 309,169,360,900/240,212
6. Step 6: Final answer
   x = 1,287,068.76