Finding the Third Proportional to 219,547.50 and 456,321

Step by Step Solution

1. Step 1: Write the proportion equation
   219,547.50 : 456,321 = 456,321 : x
2. Step 2: Convert to fraction form
   219,547.50/456,321 = 456,321/x
3. Step 3: Cross multiply
   219,547.50x = 456,321 × 456,321
4. Step 4: Simplify right side
   219,547.50x = 208,228,855,041
5. Step 5: Solve for x
   x = 208,228,855,041/219,547.50
6. Step 6: Final answer
   x = 948,445.58