Finding the Third Proportional to 354,973.50 and 772,143

Step by Step Solution

1. Step 1: Write the proportion equation
   354,973.50 : 772,143 = 772,143 : x
2. Step 2: Convert to fraction form
   354,973.50/772,143 = 772,143/x
3. Step 3: Cross multiply
   354,973.50x = 772,143 × 772,143
4. Step 4: Simplify right side
   354,973.50x = 596,204,812,449
5. Step 5: Solve for x
   x = 596,204,812,449/354,973.50
6. Step 6: Final answer
   x = 1,679,575.55