Finding the Third Proportional to 358,957,954.69 and 780,808,627.69

Step by Step Solution

1. Step 1: Write the proportion equation
   358,957,954.69 : 780,808,627.69 = 780,808,627.69 : x
2. Step 2: Convert to fraction form
   358,957,954.69/780,808,627.69 = 780,808,627.69/x
3. Step 3: Cross multiply
   358,957,954.69x = 780,808,627.69 × 780,808,627.69
4. Step 4: Simplify right side
   358,957,954.69x = 609,662,113,071,236,992
5. Step 5: Solve for x
   x = 609,662,113,071,236,992/358,957,954.69
6. Step 6: Final answer
   x = 1,698,422,071.75