Finding the Third Proportional to 191,971,312 and 309,137,064

Step by Step Solution

1. Step 1: Write the proportion equation
   191,971,312 : 309,137,064 = 309,137,064 : x
2. Step 2: Convert to fraction form
   191,971,312/309,137,064 = 309,137,064/x
3. Step 3: Cross multiply
   191,971,312x = 309,137,064 × 309,137,064
4. Step 4: Simplify right side
   191,971,312x = 95,565,724,338,540,096
5. Step 5: Solve for x
   x = 95,565,724,338,540,096/191,971,312
6. Step 6: Final answer
   x = 497,812,529.09