Finding the Third Proportional to 528,663 and 793,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,663 : 793,156.50 = 793,156.50 : x
2. Step 2: Convert to fraction form
   528,663/793,156.50 = 793,156.50/x
3. Step 3: Cross multiply
   528,663x = 793,156.50 × 793,156.50
4. Step 4: Simplify right side
   528,663x = 629,097,233,492.25
5. Step 5: Solve for x
   x = 629,097,233,492.25/528,663
6. Step 6: Final answer
   x = 1,189,977.80