Finding the Third Proportional to 358,956,711 and 780,806,142

Step by Step Solution

1. Step 1: Write the proportion equation
   358,956,711 : 780,806,142 = 780,806,142 : x
2. Step 2: Convert to fraction form
   358,956,711/780,806,142 = 780,806,142/x
3. Step 3: Cross multiply
   358,956,711x = 780,806,142 × 780,806,142
4. Step 4: Simplify right side
   358,956,711x = 609,658,231,384,924,160
5. Step 5: Solve for x
   x = 609,658,231,384,924,160/358,956,711
6. Step 6: Final answer
   x = 1,698,417,142.52