Finding the Third Proportional to 139,239,942 and 289,922,572

Step by Step Solution

1. Step 1: Write the proportion equation
   139,239,942 : 289,922,572 = 289,922,572 : x
2. Step 2: Convert to fraction form
   139,239,942/289,922,572 = 289,922,572/x
3. Step 3: Cross multiply
   139,239,942x = 289,922,572 × 289,922,572
4. Step 4: Simplify right side
   139,239,942x = 84,055,097,755,095,184
5. Step 5: Solve for x
   x = 84,055,097,755,095,184/139,239,942
6. Step 6: Final answer
   x = 603,670,875.96