Finding the Third Proportional to 856,603,438.59 and 1,155,759,162.89

Step by Step Solution

1. Step 1: Write the proportion equation
   856,603,438.59 : 1,155,759,162.89 = 1,155,759,162.89 : x
2. Step 2: Convert to fraction form
   856,603,438.59/1,155,759,162.89 = 1,155,759,162.89/x
3. Step 3: Cross multiply
   856,603,438.59x = 1,155,759,162.89 × 1,155,759,162.89
4. Step 4: Simplify right side
   856,603,438.59x = 1,335,779,242,605,580,288
5. Step 5: Solve for x
   x = 1,335,779,242,605,580,288/856,603,438.59
6. Step 6: Final answer
   x = 1,559,390,474.54