Finding the Third Proportional to 359,027,559 and 786,155,827.50

Step by Step Solution

1. Step 1: Write the proportion equation
   359,027,559 : 786,155,827.50 = 786,155,827.50 : x
2. Step 2: Convert to fraction form
   359,027,559/786,155,827.50 = 786,155,827.50/x
3. Step 3: Cross multiply
   359,027,559x = 786,155,827.50 × 786,155,827.50
4. Step 4: Simplify right side
   359,027,559x = 618,040,985,112,209,792
5. Step 5: Solve for x
   x = 618,040,985,112,209,792/359,027,559
6. Step 6: Final answer
   x = 1,721,430,485.26