Finding the Third Proportional to 856,603,578 and 1,155,759,342

Step by Step Solution

1. Step 1: Write the proportion equation
   856,603,578 : 1,155,759,342 = 1,155,759,342 : x
2. Step 2: Convert to fraction form
   856,603,578/1,155,759,342 = 1,155,759,342/x
3. Step 3: Cross multiply
   856,603,578x = 1,155,759,342 × 1,155,759,342
4. Step 4: Simplify right side
   856,603,578x = 1,335,779,656,620,272,896
5. Step 5: Solve for x
   x = 1,335,779,656,620,272,896/856,603,578
6. Step 6: Final answer
   x = 1,559,390,704.09