Finding the Third Proportional to 491,663.50 and 772,553

Step by Step Solution

1. Step 1: Write the proportion equation
   491,663.50 : 772,553 = 772,553 : x
2. Step 2: Convert to fraction form
   491,663.50/772,553 = 772,553/x
3. Step 3: Cross multiply
   491,663.50x = 772,553 × 772,553
4. Step 4: Simplify right side
   491,663.50x = 596,838,137,809
5. Step 5: Solve for x
   x = 596,838,137,809/491,663.50
6. Step 6: Final answer
   x = 1,213,915.90