Finding the Third Proportional to 139,069,012.50 and 289,582,820.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139,069,012.50 : 289,582,820.25 = 289,582,820.25 : x
2. Step 2: Convert to fraction form
   139,069,012.50/289,582,820.25 = 289,582,820.25/x
3. Step 3: Cross multiply
   139,069,012.50x = 289,582,820.25 × 289,582,820.25
4. Step 4: Simplify right side
   139,069,012.50x = 83,858,209,783,943,808
5. Step 5: Solve for x
   x = 83,858,209,783,943,808/139,069,012.50
6. Step 6: Final answer
   x = 602,997,089.55