Finding the Third Proportional to 139,069,009.69 and 289,582,814.81

Step by Step Solution

1. Step 1: Write the proportion equation
   139,069,009.69 : 289,582,814.81 = 289,582,814.81 : x
2. Step 2: Convert to fraction form
   139,069,009.69/289,582,814.81 = 289,582,814.81/x
3. Step 3: Cross multiply
   139,069,009.69x = 289,582,814.81 × 289,582,814.81
4. Step 4: Simplify right side
   139,069,009.69x = 83,858,206,634,730,672
5. Step 5: Solve for x
   x = 83,858,206,634,730,672/139,069,009.69
6. Step 6: Final answer
   x = 602,997,079.10