Finding the Third Proportional to 528,161 and 780,593.50

Step by Step Solution

1. Step 1: Write the proportion equation
   528,161 : 780,593.50 = 780,593.50 : x
2. Step 2: Convert to fraction form
   528,161/780,593.50 = 780,593.50/x
3. Step 3: Cross multiply
   528,161x = 780,593.50 × 780,593.50
4. Step 4: Simplify right side
   528,161x = 609,326,212,242.25
5. Step 5: Solve for x
   x = 609,326,212,242.25/528,161
6. Step 6: Final answer
   x = 1,153,675.13