Finding the Third Proportional to 191,404,248 and 419,864,688

Step by Step Solution

1. Step 1: Write the proportion equation
   191,404,248 : 419,864,688 = 419,864,688 : x
2. Step 2: Convert to fraction form
   191,404,248/419,864,688 = 419,864,688/x
3. Step 3: Cross multiply
   191,404,248x = 419,864,688 × 419,864,688
4. Step 4: Simplify right side
   191,404,248x = 176,286,356,229,337,344
5. Step 5: Solve for x
   x = 176,286,356,229,337,344/191,404,248
6. Step 6: Final answer
   x = 921,015,902.58